stiles



(No Model.) e 4 Sheets-Sheet 1.

G. A. .STILBS TACK DRIVING MAG-EINE.

' No. 508,780. Patented 1\T0V.1"L1,l893` (No Model.)

(No Model.) 4 sheets-sheet 3.

G. A. STILES. IAGK DRIVING MACHINE.

No. 508,780. Patented Nov. 14, 1893.

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THE nAYmNAI. umoaRAPHlNe COMPANY.

wAsHlNaroN n.4:

@xvii 5 1 (No Model.)

UNITED STATES PATENT EETOE.

GEORGE A. STILES, OE EEOOKLINE, ASSIGNOE OE ONE-HALE' To' GEORGE H. P. ELAGG, OE BOSTON, MASSACHUSETTS.

VTA'cK'-oai\/KING MACHINE.

I SPECIFICATION forming partof Letters-Patent No. 508,780, dated November 14,1893.v

Application ined Jun@ 18, 1892.

To a/ZZ whom it may concern:

VBe i-t known thatI, GEORGE vANDOVEE STILES, of Brookline,w in the county ot' Norfolk and State of Massachusetts, have invented an ImprovedTack-Driving Machine, of which thefollowing is a 'specicatioln reference being had to the accompanying drawings, making a part hereof, in which- Figure l is an elevation partlyin section, and Fig. 2 a plan, and Fig. 3 a front view of a machine embodying my invention. Fig. 4 is a plan of the nail-ways and pickers. Figs. 5 and 6 illustrate details of construction of the pickers; and Fig.'7 is asectional illustration of the cam and slide by which the pickers are reciprocated.

My invention relates to the selection of either one of two or more lengths of tacks and consists in the combination of two or more nail` ways each with its individual throat through which the driver passes, with a main throat common to both; also certain other'cornbinations hereinafter described. `Each nailway is supplied as usual with tacks or nails, this being a matter too well known to require description.

The nailWaysA A and their appurtenances are shown in the drawings as supported on an axis, 0c, the essential matter being that the ends of the nailways may be moved in order to bring either Oneof the two nailway throats a a2 over the main throat b and in line with the driver B. Thelever D fulcrumed on stud d connects with block A2 which supports the ends of both nailways, so that bya motion of lever D either nailway can 'be brought into position with its throat ot or CL2 in line with the driver; the spring catch shown in the drawings serving tohold the lever D and the nailways in position. When in position shown in Fig. 4, the check spring 0.4 is clear of its picker f and serves simply to stop the column of tacks in nailway A'; while the check spring a? is brought under the action of its pickerf. These pickers ff reciprogate endwise,'and'picker f pushes the lowermost tack of the column in nailway A past spring a3, and into throat c; picker f then reciprocatingidly.` But whenfthe nailways are shifted to bring throat a in line with the smaila, 43m65.- (Nomad.)

i driver, picker f pushes the lowermost tack inA nailway A past spring 0,4 and into throat et. In either. case the tack falls through throat a or a', and into the main throat b.

In the machine shown-in the drawings, which is intended for tacking the uppers in lasting I have shown this main throat b as movable endwise, and I have,therefore, shown a supplemental throat b; but if the main throat b be not movable the supplemental throat will be unnecessary, as will be Obvious.

The pickersff may be actuated by any suitable mechanism; but I prefer to mount them on a post F whichis fast to slide f2, which is reciprocated by cani f3 Whose shaft f4 is geared by spiral]c6 with spiral f7 on the main shaft. of the machine.

The driver guide b2 is also a novel feature; for although drivers are guided into the throat in all machines of this class, I am the tirst to combine a fixed guide through which the driver passes, and under which a block containing a plurality'of throats ad is moved to bring either into line with the throat through the driver guide. This combination of a driver guide and the block A2 carrying the nailways and with the throats ct ct through it is a feature Ot'grny invention, which is particularly valuable `when the machine must run at very high speed; for it steadies the .driver and insures its perfect'alignment with either throat ad.A "fi I have shown parts of a tack driving machine in order that my invention may be botter understood; but 'the parts not lettered areto well known to require description, and may be of any suitable construction familiar to all skilled in theart. i

What I claim as my invention is*n l; In a tack driving machine a plurality of nailways terminating in; a block with two holes through it, leadingfrom the under side of the lower end of each nailway, each hole forming a throat for its nailway; in combination (with adriver; a main throat; andmechanism for shifting the block and nailways to bring either hole through the block -in line with the main throat anddriverjall substantially as describedf p 2. In atackdriyilng. machinleapll'rrality of nalways terminating iu a block with two holes through it, leading from the under side of the lower end of each nailway, each hole forming a throat for its nailway; in combina,- 5 tion with a, driver guide; a driver; wmaiu throat; and mechanism for shifting the block and nailways to bring either hole through the block in line with and between thedriver guide and main throat; all substantially as described.

- GEO. A. STILES.

Witnesses: A

J. E. MAYNADIER, JOHN R. SNOW. 

